It seems, there is an issue on HPE G8 servers with the below ESXi versions:

1. ESXi 5.5 Patch 10
2. ESXi 6.0 Patch 4
3. ESXi 6.5

Intel® IOMMU’s (aka VT-d) interrupt remapper functionality has been changed in the above versions and you need to enable it manually:

• Run this command:

  esxcli system settings kernel set –setting=iovDisableIR -v FALSE

• Reboot the ESXi host.
• Ensure the iovDisableIR setting is set to FALSE with this command:

  esxcli system settings kernel list -o iovDisableIR

  For example:

  esxcli system settings kernel list -o iovDisableIR

  Name          Type  Description                                 Configured  Runtime  Default
  ————  —-  —————————————     ———-  ——-  ——-
  iovDisableIR  Bool  Disable Interrupt Routing in the IOMMU…   FALSE       FALSE    TRUE